Posts gone and error message

All my posts from last week (Friday) are gone!?

Where did they go - or have they been deleted?

As well I get the following error message on top of my browswer window:

Warning: chmod failed: Operation not permitted in /usr/local/www/net-oriented/htdocs/ubb/ultimatebb.php on line 348

My post in the Open Forum is on the same topic.

Can the Oriented people please explain what happened? Are the posts from the 15th and 16th gone for good?

Closing this thread:

Please go to Mwalimu’s discussion in the Open Forum (click here). I will post there